stm32f100 bootloader problem

mli · ‎2013-10-30

Posted on October 30, 2013 at 21:11

I tried to load the application code from my stm32f407 board to stm32f100 by rs232 and the bootloader inside the stm32f100. I set the baudrate as 19200, 8bit, parity-even, one-stop bit per the application note. However, I can only receive 0x79 from the stm32f100 by luck. Sometime, the acknowledge is 0x72 or something else. Once I got 0x79, I send two bytes such as 0x00, 0xff and I got 0x79 and no more. What is wrong with my procedure?

Tesla DeLorean · ‎2013-10-30

Posted on October 30, 2013 at 21:23

Dunno, but 8E1 on an STM32 is programmed as 9-bit + Parity Even, the 9th bit being the parity bit.

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mli · ‎2013-10-31

Posted on October 31, 2013 at 23:31

clive1,

it works per your instruction. Thank you!